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. 2023 Jan 12;62(7):e202217064. doi: 10.1002/anie.202217064

Scheme 2.

Scheme 2

A) Optimization of BCB carbinolate formation; yields determined by 1H NMR analysis. B) Formation of side products during BCB carbinolate formation. C) Palladium‐catalyzed cross‐coupling for the formation of 1‐oxaspiro[2.3]hexanes; yield of isolated product.